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When to Plant Feverfew in Gila County, AZ

Gila County, Arizona Zone 9a May

May in Gila County, Arizona — your action list

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Gila County, Arizona.

Avg. last frost February 13
Avg. first frost December 5
Soil temp (4") 58°F
Watering Critical
Pest pressure Moderate
Daylight 13.8 hrs
  1. Bring in the feverfew

    If you can't use it all right away, check the food-preservation section of your planner.

A few tasks this May that'll pay off in June
  • First harvests: feverfew

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Feverfew is a bushy perennial herb with small daisy-like flowers and aromatic leaves. It has been used traditionally for headache relief and is a cheerful garden plant.

Gila County, Arizona is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 5, giving you a growing season of approximately 295 days.

At an elevation of 3,643 feet, Gila County receives approximately 9.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94°F, providing good warmth for Feverfew during the growing season. Sandy soil warms quickly in spring — great for early planting — but Feverfew will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Feverfew successfully. Mulch heavily to conserve soil moisture.

Gila County, AZ (Zone 9a) Year-round
295 days
Last Spring Frost February 13
295 growing days
First Fall Frost December 5
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Gila County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.7-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Transplant: Feb 10 🍅 Harvest: May 12 – Jul 28
Recommended (50%) ✓ Fits season (120 days to spare)
Transplant: Feb 20 🍅 Harvest: May 22 – Aug 7
Safe Start (90%) ✓ Fits season (101 days to spare)
Transplant: Mar 31 🍅 Harvest: Jun 30 – Sep 15

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Gila County

How your county's soil matches Feverfew's growing requirements.

Soil pH

Your soil pH (6.7–8.4) is more alkaline than Feverfew prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Gila County warms quickly in spring but drains fast. Feverfew will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Feverfew.

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Feverfew.

How to Plant Feverfew

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.1″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,638 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Feverfew

Feverfew needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Feverfew Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 2.2" 0.6" 1.6" 🚿 Regular watering
Mar 2.2" 0.5" 1.7" 🚿 Regular watering
Apr 2.2" 0.3" 1.9" 🚿 Regular watering
May 2.2" 0.2" 2" 🚿 Regular watering
Jun 2.2" 0.3" 1.9" 🚿 Regular watering
Jul 2.2" 1.5" 0.7" 💧 Light watering
Aug 2.2" 1.8" 0.4" 💧 Light watering
Sep 2.2" 1.5" 0.7" 💧 Light watering
Oct 2.2" 0.9" 1.3" 🚿 Regular watering
Nov 2.2" 0.5" 1.7" 🚿 Regular watering
Dec 2.2" 0.7" 1.5" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Gila County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Feverfew Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Feverfew needs ~2,152 GDD — county provides 6,068 GDD Excellent fit

Feverfew Planting Timeline — Gila County, AZ

Feverfew Planting Calendar

Activity When Date Range
Transplant Outdoors February 20 Feb 20 – Mar 6
Harvest May 22 May 22 – Aug 7

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Transplant Outdoors
March Transplant Outdoors
April
May Harvest
June Harvest
July Harvest
August Harvest
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · 1-2 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 9a

📆 Growing Season

295 days in Gila County

Growing Tips for Feverfew in Gila County

Direct sow Feverfew outdoors after February 13 in Gila County when soil has warmed and frost danger has passed.

Sandy soil in Gila County dries quickly — mulch Feverfew with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for Feverfew in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

Gila County receives only 9" of rain annually. Feverfew needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors or direct sow on the soil surface. Deadhead regularly to prevent aggressive self-seeding. Divide clumps every 2-3 years to maintain vigor.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Feverfew in Gila County, AZ?

Gila County is in Zone 9a with an average last frost of February 13. Plan your Feverfew planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gila County, AZ?

Gila County, Arizona is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 5.

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Your Gila County Garden Planner — Free

A 24-page printable planner built for Gila County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Gila County, AZ. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.